Wristwatch



FIG. 1 is a perspective view of the front and right side of a wristwatch showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a left side elevational view thereof.

The broken lines in the drawings are used to show portions of the wristwatch that do not form part of the claimed design. 

CLAIM The ornamental design for a wristwatch, as shown and described. 